A scleral disease that is characterized by painful inflammation of the episcleral tissues that, importantly, spares the sclera itself and has_symptom pain, red eyes, photophobia, tearing, and blurry vision. Episcleritis periodica fugax is typically self-limited but may be related to vascular congestion within the superficial episcleral plexus and associated with autoimmune disease, connective tissue disease, malignancies, trauma, infection, and medications, especially topiramate and pamidronate. [ url:https://eyewiki.aao.org/Episcleritis ]